Answer:
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Explanation:
Answer:
X= 700 Joules
Explanation:
The question asked about the efficiency of the work done.
The formula for efficiency is: Efficiency = (Useful output / input work) * 100%
The useful output given in the question is 140J, the question asked for input work. Let X be the input work. It is also given that the efficiency is 20%.
Using the formula of efficiency,
20 = (140/X) * 100
So, we simply solve the above equation.
X= 140*100/20
X= 700 Joules
They are similar because they both have opposite poles that attract each other and similar poles that oppose each other. also they are connected because when you run an electric current through some coiled metal it makes a magnet (electro-magnet)
It is a theory on a show that people try to solve.
Hello !
<u>Quelle affirmation est correcte à propos de la substance inconnue? </u>
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<u>Son point de fusion est de 17 ° C. </u>
